• Annual Conference of KIPS
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• 2010.04a
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• pp.78-81
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• 2010

ARINC 653은 통합형 항공전자 시스템에서 사용되는 응용프로그램 간의 인터페이스와 실시간 운영체제의 표준을 정의한다. ARINC 653에 정의되어 있는 네트워크 통신 인터페이스는 대형 항공기뿐만 아니라 무인 비행체와 같은 작은 항공체에도 적용이 가능하다. 이러한 작은 시스템에서는 TCP/IP와 같이 무거운 프로토콜보다는 경량의 실시간 프로토콜이 적합하다. 본 논문에서는 RTDiP을 이용하여 ARINC 653의 통신 인터페이스 중에서 Queuing-mode를 구현하고 성능 측정을 수행한다.

• Journal of Satellite, Information and Communications
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• v.10 no.4
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• pp.83-86
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• 2015

In this paper, we propose a real-tim measurement management system UI development linked the Water treatment facilities broadband Convergence Network. The sensor and the image data received by the server develop a program to interact with Web through water treatment facilities broadband convergence network. So, Separately develop UI capable of independently operating. Building a web server for remote monitoring of the transmission sensor and the image data. And Monitoring and control is possible the sensor data and image data through the Web-based UI. We can grasp the current state such as measurement time, concentration and depth of interface through the proposed real-time measurement management system UI development liked the water treatment facilities broadband convergence network. So, we can check in whether the normal operation of water treatment facilities and whether the casualties such as fire and security. As well as real time to see the information at a glance due to UI development can be raal-time monitoring of real-time measurement management system.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.410-414
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• 2009

홍수 유량 측정에 주로 활용되는 봉부자법은 신속하고 간편하게 유량을 측정할 수 있지만, 부자의 유하 경로를 정확하게 알 수 없으므로 가정된 직선을 따라 유하하지 않을 경우 유속과 단면적 계산에 불확실성이 다소 크게 발생하는 단점이 있다. 또한 측정에 소요되는 시간이 짧지만, 대개 현장에서 유량 계산이 바로 이루어지지 못하므로 측정 유량의 적절성을 충분히 평가하지 못한다. 본 연구에서는 봉부자법의 장점은 살리고 단점을 개선할 수 있는 전자부자 시스템을 개발하고 이를 이용하여 유량을 산정하였다. 개발된 전자부자 시스템은 GPS에 의해 유하경로를 획득하여 RF 통신을 통해 실시간으로 기지국에 정보를 전송한다. 기지국은 3개 RF 채널을 통해 최대 15개의 전자부자의 위치 정보를 동시에 수집하며, 각 전자부자의 유하경로와 미리 측량한 단면 자료를 결합하여 측정과 동시에 자동으로 유속을 계산한다. 이렇게 계산된 유속은 지리정보와 결합되어 있으므로 하천의 평면 2차원적 흐름 특성을 나타내는데 활용될 수 있으며, 나아가 미리 측량된 단면 자료와 결합하여 측정과 동시에 즉각 유량이 얻어질 수 있다. 이러한 점에서 본 연구는 전자부자를 이용하여 현장에서 유속과 유량을 실측한 사례를 제시하고자 한다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.17 no.4
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• pp.441-455
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• 2015

In the present study, a face safety monitoring system was developed that will enable judging collapse risks on faces during tunnel construction to secure workers' safety. This system enables detecting abnormal behaviors of faces by analyzing the displacement of faces measured in real time using the x-MR control chart technique. In addition, an algorithm to judge false alarms was developed so that abnormal behaviors of faces and errors occurring in the process of work can be distinguished from each other by comparing the number of measured values exceeding the management criteria and moving range k. The results of the present study are applicable to real-time monitoring of behavior on the face in dangerous ground sections to minimize damage to workers.

• Journal of Korea Multimedia Society
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• v.3 no.2
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• pp.112-120
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• 2000

In this paper, we implement a real-time textile dimension inspection system. It can detect various types of real defects which determine the quality of fabric product, defect positions of textile, classify the distortion angel of moving textile and the density. In the implemented system, we measure the density of textile using zone-crossing method with optical lens to solve the noise and real-time problems. And we compensate distortion angel of textile with the classification of distortion types using gaussian gradient and mean gradient features. And also, it detecs real defects of textile and its positions using gray level co-occurrence matrix features. The implemented texile demension inspection systemcan inspect textile dimensions such as density, distortion angle, defect of textile and defect position at real-time. In the implemented proposed texitile dimension inspection system, It is possible to calculate density and detect default of textile at real-time dimension inspection system, it is possible to calculate density and detect default of textile at textile states throughout at all the significant working process such as dyeing, manufacturing, and other texitle processing.

• Journal of Advanced Navigation Technology
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• v.23 no.5
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• pp.452-459
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• 2019

In this paper, we describe a PCM encoder structure that can update the telemetry system parameters in real time. In the PCM encoder, an analog signal control unit for FPGA, flash memory, and sensor data acquisition was constructed. UART communication, analog signal control, flash memory control, and frame generation are possible through logic inside FPGA of PCM encoder. UART communication allows the PC to transmit parameter data to the PCM encoder, and flash memory is controlled to update the parameter of the telemetry system in real time and finally the frame is formed. Simulation and verification were performed to confirm whether the parameter data is updated in real time, and the proposed structure was used to construct a telemetry system with enhanced flexibility and convenience.

• Aerospace Engineering and Technology
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• v.2 no.2
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• pp.167-178
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• 2003

The design on the Telemetry Ground System for launch of KSLV(Korea Space Launch Vehicle) in the korean Space center has been conducted in this study. For the optimized system design, first of all, the system deployment plan reflecting the topographic and geographic environments of the space center and launch vehicle characteristics has been developed. The RF link budget analysis for the maximum tracking range, requirement for receiving subsystem including antenna subsystem, requirement for data processing subsystem are also analyzed based on the On-Board Telemetry characteristics and launch vehicle parameters. Based on those analysis, telemetry ground system containing tracking/receiving subsystem, recording subsystem and data processing subsystem, timing subsystem, calibration subsystem and monitoring and control subsystem are designed. Futhermore, the analysis for the maximum permissible data latency and communication protocol between each telemetry station and control center are conducted and the entire system is designed so that the major telemetry parameters selected to the best quality are provided in real time to the control center(RCC, RSC) for the launch mission operation.

• Proceedings of the KIEE Conference
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• 2006.07d
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• pp.1777-1778
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• 2006

본 논문은 수작업으로 측정해야 했던 하천 유속 측정을 초음파센서를 이용한 측정장치를 개발하여 자동화하고 이를 저장관리하는 장치와 상용 CDMA망을 이용하여 실시간 정보 전달이 가능하도록 하는 데이터로거 시스템 개발에 관한 내용이다.

• Proceedings of the Acoustical Society of Korea Conference
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• 1998.06d
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• pp.68-71
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• 1998

본 연구에서는 64(8$\times$8) 개의 마이크로폰 정방 배열에 의한 음장 가시화 시스템을 설계하고 , FFT 알고리즘과 원거리 음향 홀로그래피법 알고리즘을 이용한 음원 위치 추정에 관하여 기술한다. 본 연구에서 설계한 측정 시스템은 방사된 음들을 동시에 수음할수 있으며 실시간 데이터 처리가 가능하다. 또한 짧은 계측시간과 고분해능으로 실음장에서 안정하게 음원의 위치를 추정할 수 있다. 본 연구의 타당성을 검증하기 위해 시뮬레이션을 잉하여 마이크로폰 간격 및 측정면의 최적 조건을 구한 후 실음장 측정 실험에 적용하였다. 시뮬레이션 데이터와 실험 데이터를 비교.분석한 결과 타당성을 검증할 수 있었다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.4
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• pp.161-168
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• 2018

High blood pressure is main today's adult disease and existing blood pressure gauge is not possible for real-time blood pressure measurement and remote monitoring. But real-time blood pressure monitoring u-healthcare system makes effect health management. In my paper, for monitoring real-time blood pressure, an architecture of real-time blood pressure monitoring system which consisted of wrist type-blood pressure measurement, smart-phone and u-healthcare server is presented. And the analog circuit architecture which is major core function for pulse wave detection and digital hardware architecture for wrist type-blood pressure measurement is presented. Also for software development to operate this hardware system, UML analysis method and flowcharts and screen design for this software design are showed. Therefore such design method in my paper is expected to be useful for real-time blood pressure monitoring u-healthcare system implementation.